Radial drilling machine



H. L. BLOOD RADIAL DRILLING MACHINE Dec. E6, m4., 1,519,351

Filed Deo. 29, 1922. 4' 56./

, His:

'E INVENToR -3 f /Mlood Z5 ATTORNEY- Patented Dec. 16, i924.,

im a a garant HAROLD L. .BLO0D, 0F NOR-TH PLAINFIELD, NEVI JERSEY,ASSGNOR T0 NLES-BEMENT- FUND COME?.il-fh??t QE' NER?! YORK. l'l. l.CRPGRATN OE NEW JERSEY.

RADIAL DRLING NIACHNE.

Application filed December 29, 1922. Serial No. 609,735.

To all whom t may concern.'

Be it known that l, HAROLD Biioon a citizen of the United States,residing at North Plainfield, in the county of Somerset and State of NewJersey, have inventedv eertain new and useful lr/iprovements in RadialDrilling Machines7 of which the following is a specification.

'lhis invention relates to radial drilling machines and particularly tosucli machines of the universal type. ln such type of radial drill, thedrill spindle supporting portion of the arm is mounted for rotaryadjustment about an airis extending longitudinally therethrough and thedrill spindle supporting head is rotatably adjustable on its saddleabout an axis at right angles to the airis of adjustment of the arm.Heretofore7 both such adjustments have been made manually. The headbeing of comparatively light weight can be manually adjusted withoutinconvenience but since the arm is relatively heavy considerable effortis required to adjust the same. rlhe primary object of the invention isto provide a convenient power operated mechanism for rotatably adjustingthe arm.

Another object of the invention is to provide, in combination with aradial drilling machine having a drill spindle driving arm shaftextending longitudinally through the arm, mechanism including gearingdriven from thesaid shaft for rotatably adjusting the arm about suchshaft.

Withthe above and other objects in view, my invention consists in thefeatures of construction and operation set forth in the followingspecification and illustrated in the accompanying drawing. ln suchdrawing annexed hereto and forming a part of this specification, l haveshown one 'embodiment of my invention but it will be understood that theinvention can be otherwise embodied and that the drawing is not to beconstrued as defining or limiting the scope of the invention, the claimsappended to this speciiication' being relied upon for that purpose.

Referring to the figures of the drawing:

Figure 1 is a front elevation of aradial drilling machine embodying myinvention.

Fig. 2 is an enlarged fragmentary vertical section through the arm andcolumn shown in Fig. 1.

Fig. 3 is a cross section thereof approximately on line 3-3 of F ig. 2.

Referring more speciiically tothe drawing by reference characters7 lindicates the base, 2 the column and 3 the vertically adjustable arm. ofa radial drilling machine. 'Ehe column 2 is preferably divided as shownin Patent No. 1,071,590 and the arm 3 or a carrying member 3fl thereforextends oetween the two parts of the column and 1s suitably guidedtherein for vertical movement. Rigidly mounted at the rear end of thearm is a gear casing l which carries an electric motor 5. Slidablymounted on the other end 3b of the arm is a saddle 0 carrying a head 7provided with a rotatable drill spindle 8. A driving shaft 9 entendslongitudinally of the arm and is operatively connected to the spindle bymeans of bevel gears 10 and a short shaft 11.

Mounted on the shaft of the motor 5 is a pinion 12 which meshes with agear 13 loosely mounted on the shaft 9. Connected with the gear 13 is apinion 14 which meshes with a gear 15 on a countershaft 16. Mounted onthe shaft 16 is a pinion 17 which is adapted to mesh with a gear 18splined on the shaft 0 and movable by means of a hand lever 10. lWiththe parts in the position shown in Fig. 1, the shaft 9 is driven at arelatively low speed indirectly from the motor through the countershaft16. lWhen the gear 13 is moved toward the left7 it is disengaged from`the pinion 17 and is engaged with clutch teeth on the end of the pinion14, thus making a direct high speed drive from the gear 13 to the shaft9. lt will be` understood that the entire gear mechanism as described ismounted within the lcasing Ll and that this casing with the gearing andmotor 5 is vertically movable with "the arm 3.

` is shown specifically in Patent No. 1,363,- 20/-l, the head l may berotatably adjusted about the shaft 11 on the saddle (i by means of anoperating shaft 20. The drill supporting portion 3b of the arm 3 isadapted .to be rotatably adjusted about the arm shaft 9. The improvedmeans for so adjusting the arm from thc arm shaft 9 as hereinafterdescribed comprises the main feature of this invention.

its shown specifically in Figs. 2 and 3, the drill supporting portion 3bof the arm 3 is rotatably mounted on a hub 21 of the carrying member 3ZLslidable vertically in the column 2 and such portion may be 1igidlylll.)

fill

kpositioned between the parts 3a and 3".

secured to the member 3a by means of bolts :22. The bolts are mounted inthe part 31 and the heads thereof engage within an annular T-slot 23 inthe member 3a. By tightenng th@ HUS 24, the part 3b may be rigidlysecured in adjusted position to the part 3a.

Secured to the end of the part 3b of thel arm by means of screws 9,5and'pins :25' is an annular flanged member 26 provided with internalgear teeth 27, such member being A bracket member 2.8 bolted to themember 3a engages the outer end of the gear 26 whereby to hold lthe armportion 3b positioned on the hub 2l. Pins 29 and 30 respective-ly on theparts 3a and 3b limit the rotary adjustment of the arm portion 3b.

l Rotatably mounted in the part 3a are two pins 3l and 32. A portion ofpin 3l is formed into a pinion 33 in mesh with a pinion 3A on the pin32, the pinion 34; being in mesh with the internal gear teeth 27. Keyedto the outer end of the pin31 is a gear 35. A pinion 36 forming a partof a sleeve 37 is splined on the shaft 9 for longitudinal movement intoand out of mesh with the gear 35; A spring pressed detent 38 within ahand gripping portion 39 of the sleeve normally holds the pinion 36`disengaged from the gear 35. `When it is desired to rotatably adjustthe portion 3b of the arm, the operator loosens the nuts and engages thepinion 36 with the gear An operative connection is thus made with themotor 5 whereby the arm may be rotatably adjusted therefrom.

The arm 3 may be moved vertically on the column from the motor asfollows: A screw 4l@ is supported by the column at its upper end 41. Anut 4t2 provided with a bevel gear 43 thereon .is rotatably mounted inthe portion 3a 'of the arm and in threaded engagement with the screw. A

ybevel gear la on a shaft 45 coaxial with the shaft 16 is in mesh withthe bevel gear A3. A clutch 46 shiftable by a handle a? is adapted toconnect shaft 16 with the shaft 45. A driving connection is therebyestablished between the motor 5 and nut 42 whereby such nut may berotated in either direction to elevate or lower the arm 3.

1What l claim is:

1. A radial drilling machine comprising the combination of a verticallyextending column, a horizontal arm movable vertically thereon, drillspindle supporting means on the arm, a drill spindle rotatably mountedtherein, power means for rotating the spindle, and means operated by thesaid power means for rotatably adjusting the spindle supporting` portionof the arm about a horizontal axis Xtending longitudinally therethrough.j

2.` A radial drilling machine comprising the combination of acolu'mm'anarm movable vertically thereon, drill spindle sepporting meanson thearm, a drill spindle rotatably mounted therein, means includ` inga power operated shaft extending longitudinally through the arm forrotating the drill spindle, and means adapted to be operated from thesaid shaft for rotatably adjusting the spindle supporting portion of thearm about the shaft.

3. A radial drilling machine comprising the combination of a column, anarm movable vertically thereon, screw threaded means for movingthe armvertically,drill spindle supporting meanson the arm, a drill spindlerotatably .mounted therein, a shaft extending longitudinally of the `armand operatively connected to the spindle, power means for operating theshaft and the said screw threaded means, and means adapted to beoperated from the said shaft for rotatably adjusting the spindlesupporting 'portion of the arm about the shaft as an axis.

4. A radial drilling machine comprising vthe combination of a column, anarm movable vertically thereon, drill spindle sup-- porting means onthearm at one side o f the column, a drill spindle rotatably mountedtherein, a motor on the arm at the other side of the column, meansincluding a shaft extending longitudinally of the arm operativelyconnecting the motor with the spindle, and means adaptedto be operatedfrom I..

the shaft for rotatably adjusting the spindle supporting portionof thearm about the shaft. f

5. A radial drilling machine comprising the combination of a column, anarm mov-l able vertically thereon, drill spindle supporting means on thearm, a drill spindle rotatably mounted therein, means including a poweroperated shaft extendingy longitudinally through the Varm for rotatingthe drill spindle, and gearing including a pinion slidable on the shaftinto and out of operative position for rotatably adjusting the spindlesupporting portion of the arm about the shaft.

6, A radial drilling machine comprising the combination of a column, anarm movable vertically thereon, one portion of the arm being supportedby the column and another portion thereof being mounted on the firstportion for rotary adjustment about'a horizontal axis extendinglongitudinally therethrough, drill spindle supporting means on the saidadjustable portion of the arm, a drill spindle rotatably mountedtherein, means for rotating the spindle, and power operated meansincluding gearing supported respectively by the non-adjustable and theadjustable portions of the arm for rotatably adjusting the spindlesupporting portion.

7. A radial drilling machine comprising the combination oit a Column, anarm movable vertically thereon, a power operated arm shaft extendinglongitudinally through the arm, one portion of the arm being supportedby the column and another portien thereof being mounted on the rstportion for rotary adjustment about the shaft, drill spindle supportingmeans on the said ad'- 10 justable portion of the arm: a drill spindlerotatably mounted therein and operatively connected to the Shaft?, andmeans ineluding a gear on the shaft conneeted to gearing on thenon-adjustable and the adjustable portions of the arm for rotatablyadjusting the spindle supporting portion about the shaft.

In testimony whereof,v lf hereto amr my signature.

HAROLD L. BLOOD

